Baby stroller frame



FIG. 1 illustrates a perspective view of the baby stroller frame;

FIG. 2 illustrates a right side view of the baby stroller frame; and

FIG. 3 illustrates a front view of the baby stroller frame;

FIG. 4 illustrates a back side view of the baby stroller frame;

FIG. 5 illustrates a top view of the baby stroller frame; and,

FIG. 6 illustrates a bottom view of the baby stroller frame. 

CLAIM The ornamental design for a baby stroller frame, as shown and described. 